Image with eosio.cdt for building eosio contracts.
How to build: docker build -t eosio.cdt .
Make directory before running: cd ./contracts; mkdir ./build
Example of running: docker run -v REAL_CONTRACTS_ABSOLUTE_PATH/contracts:/contracts -w /contracts -i devbjune/eosio.cdt:latest eosio-cpp -abigen ./hello.cpp -o ./build/hello.wasm --contract hello